Fix LabelButtonBorder image blending.

ui/views/controls/button/blue_button.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/button/blue_button.h"
 
 #include "grit/ui_resources.h"
 #include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/views/controls/button/label_button_border.h"
@@ skipping 51 matching lines @@
   label()->SetShadowColors(kBlueButtonShadowColor, kBlueButtonShadowColor);
   label()->SetShadowOffset(0, 1);
 }
 
 BlueButton::~BlueButton() {}
 
 const char* BlueButton::GetClassName() const {
   return BlueButton::kViewClassName;
 }
 
-// TODO(msw): Re-enable animations for blue buttons. It's disabled now due
-// to crbug.com/239121.
-const ui::Animation* BlueButton::GetThemeAnimation() const {
-  return NULL;
-}
-
 }  // namespace views